Revenue Recognition on Construction Contract and Other Service Revenues (Details 2) - USD ($) $ in Thousands |
3 Months Ended | |||
|---|---|---|---|---|
Mar. 31, 2018 |
Mar. 31, 2017 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| Change in Accounts Receivable | ||||
| Beginning balance | $ 23,982 | $ 31,802 | ||
| Ending balance | 23,982 | 31,802 | ||
| Construction Contract Revenue | ||||
| Change in Accounts Receivable | ||||
| Beginning balance | 4,021 | $ 7,376 | 4,577 | $ 4,131 |
| Ending balance | 4,021 | 7,376 | 4,577 | 4,131 |
| Change in Contract with Customer, Asset | ||||
| Beginning balance | 4,250 | 4,451 | 4,884 | 10,350 |
| Ending balance | 4,250 | 4,451 | 4,884 | 10,350 |
| Change in Contract with Customer, Liability | ||||
| Beginning balance | 8,279 | 40,485 | 27,402 | 32,650 |
| Ending balance | 8,279 | 40,485 | $ 27,402 | $ 32,650 |
| Revenue recognized included in beginning balance | $ 19,297 | $ 4,199 | ||
| X | ||||||||||
- Definition Change in Accounts Receivable No definition available.
|
| X | ||||||||||
- Definition For an unclassified balance sheet, the amount due from customers or clients for goods or services that have been delivered or sold in the normal course of business, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|