Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
CURRENT ASSETS:
Cash and cash equivalents	$ 34,458	$ 15,852
Accounts receivable—net	64,779	51,940
Contract revenues in excess of billings	17,953	77,907
Inventories	28,112	34,432
Prepaid expenses	4,710	5,031
Other current assets	31,907	38,605
Assets held for sale	24,779	38,417
Total current assets	206,698	262,184
PROPERTY AND EQUIPMENT—Net	369,863	396,925
GOODWILL	76,576	76,576
INVENTORIES—Noncurrent	61,264	54,023
ASSETS HELD FOR SALE— Noncurrent	5,110	29,561
OTHER	10,760	13,088
TOTAL	730,271	832,357
LIABILITIES AND EQUITY
Accounts payable	71,537	65,153
Accrued expenses	48,351	51,926
Billings in excess of contract revenues	17,793	2,586
Revolving credit facility	11,500
Current portion of long-term debt		1,212
Liabilities held for sale	13,940	29,373
Total current liabilities	163,121	150,250
LONG-TERM DEBT	321,950	333,141
REVOLVING CREDIT FACILITY	11,500	95,000
DEFERRED INCOME TAXES	22,846	25,561
LIABILITIES HELD FOR SALE— Noncurrent	146	773
OTHER	7,280	6,336
Total liabilities	515,343	611,061
COMMITMENTS AND CONTINGENCIES (Note 12)
EQUITY:
Common stock—$.0001 par value; 90,000 authorized, 62,830 and 61,897 shares issued; 62,552 and 61,619 outstanding at December 31, 2018 and December 31, 2017, respectively.	6	6
Treasury stock, at cost	(1,433)	(1,433)
Additional paid-in capital	295,135	289,821
Accumulated deficit	(74,971)	(67,101)
Accumulated other comprehensive income (loss)	(3,809)	3
Total equity	214,928	221,296
TOTAL	$ 730,271	$ 832,357