CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities:
Net income	$ 6,529	$ 1,440
Adjustments to reconcile net income to net cash provided by operating activities:
Bad debt expense	320	400
Depreciation	12,878	13,140
Amortization of deferred revenue	(2,654)	0
Gain on sale of asset	(369)	(10)
Deferred income taxes	3,899	(715)
Compensation expense - restricted stock	1,619	1,153
Changes in operating assets and liabilities:
Contracts receivable and retainage	9,783	41,446
Costs and estimated earnings in excess of billings on uncompleted contracts	1,550	1,631
Prepaid expenses and other assets	(1,396)	946
Inventory	(1,234)	245
Accounts payable	(7,522)	(24,493)
Billings in excess of costs and estimated earnings on uncompleted contracts	247	(9,538)
Deferred revenue	(8,718)	0
Accrued employee costs	1,144	(516)
Accrued expenses	1,479	(2,803)
Accrued contract losses	(5,974)	(604)
Current income taxes	105	1,450
Net cash provided by operating activities	11,686	23,172
Cash flows from investing activities:
Capital expenditures	(3,290)	(2,953)
Net cash received in acquisition	1,588	0
Proceeds from the sale of equipment	5,548	10
Net cash provided by (used in) investing activities	3,846	(2,943)
Cash flows from financing activities:
Payments of dividends on common stock	(295)	(2,930)
Net cash used in financing activities	(295)	(2,930)
Net change in cash and cash equivalents	15,237	17,299
Cash and cash equivalents at beginning of period	34,828	36,085
Cash and cash equivalents at end of period	$ 50,065	$ 53,384