Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
CURRENT ASSETS:
Cash and cash equivalents	$ 15,852	$ 11,167
Accounts receivable—net	75,533	88,091
Contract revenues in excess of billings	90,788	95,012
Inventories	34,600	37,137
Prepaid expenses	5,183	12,407
Other current assets	40,228	63,412
Total current assets	262,184	307,226
PROPERTY AND EQUIPMENT—Net	407,294	413,008
GOODWILL	83,576	83,576
OTHER INTANGIBLE ASSETS — Net	908	1,499
INVENTORIES—Noncurrent	54,023	52,602
INVESTMENTS IN JOINT VENTURES	2,714	4,734
ASSETS HELD FOR SALE— Noncurrent	8,530	9,299
OTHER	13,128	21,644
TOTAL	832,357	893,588
LIABILITIES AND EQUITY
Accounts payable	87,659	103,185
Accrued expenses	56,218	69,043
Billings in excess of contract revenues	3,615	5,141
Current portion of long-term debt	2,758	2,465
Total current liabilities	150,250	179,834
LONG-TERM DEBT	333,141	286,291
REVOLVING CREDIT FACILITY	95,000	104,111
DEFERRED INCOME TAXES	25,561	68,449
OTHER	7,109	7,013
Total liabilities	611,061	645,698
COMMITMENTS AND CONTINGENCIES (Note 14)
EQUITY:
Common stock—$.0001 par value; 90,000 authorized, 61,897 and 61,240 shares issued; 61,619 and 60,962 outstanding at December 31, 2017 and December 31, 2016, respectively.	6	6
Treasury stock, at cost	(1,433)	(1,433)
Additional paid-in capital	289,821	286,303
Accumulated deficit	(67,101)	(35,841)
Accumulated other comprehensive income (loss)	3	(1,145)
Total equity	221,296	247,890
TOTAL	$ 832,357	$ 893,588