Contracts and Accounts Receivable (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Contracts Receivable:
Costs incurred on fee building projects	$ 99,825	$ 178,103
Estimated earnings	2,973	8,404
Contracts receivable, before collections	102,798	186,507
Less: amounts collected during the period	(89,321)	(162,203)
Total contracts receivable	13,477	24,304
Billed	0	0
Unbilled	13,477	24,304
Other receivables
Escrow receivables	4,721	3,385
Other receivables	123	144
Contracts and accounts receivable	18,321	27,833
Accounts payable related to costs incurred under fee building contracts	$ 12,100	$ 22,800