Condensed Consolidated Balance Sheets - USD ($)	Jun. 30, 2019	Dec. 31, 2018
CURRENT ASSETS:
Cash and cash equivalents	$ 125,575,000	$ 34,458,000
Accounts receivable—net	50,767,000	64,779,000
Contract revenues in excess of billings	31,159,000	17,953,000
Inventories	27,477,000	28,112,000
Prepaid expenses and other current assets	31,734,000	36,617,000
Assets held for sale		24,779,000
Total current assets	266,712,000	206,698,000
PROPERTY AND EQUIPMENT—Net	376,635,000	369,863,000
OPERATING LEASE ASSETS	74,684,000
GOODWILL AND OTHER INTANGIBLE ASSETS—Net	76,576,000	76,576,000
INVENTORIES—Noncurrent	63,199,000	61,264,000
OTHER	11,325,000	15,870,000
TOTAL	869,131,000	730,271,000
LIABILITIES AND EQUITY
Accounts payable	87,923,000	71,537,000
Accrued expenses	43,837,000	48,351,000
Operating lease liabilities	20,805,000
Billings in excess of contract revenues	50,610,000	17,793,000
Revolving credit facility	0	11,500,000
Liabilities held for sale		13,940,000
Total current liabilities	203,175,000	163,121,000
LONG-TERM DEBT	322,396,000	321,950,000
OPERATING LEASE LIABILITIES—Noncurrent	53,830,000
DEFERRED INCOME TAXES	33,706,000	22,846,000
OTHER	4,546,000	7,426,000
Total liabilities	617,653,000	515,343,000
COMMITMENTS AND CONTINGENCIES (Note 10)
EQUITY:
Common stock—$.0001 par value; 90,000 authorized, 63,769 and 62,830 shares issued; 63,769 and 62,552 shares outstanding at June 30, 2019 and December 31, 2018, respectively.	6,000	6,000
Treasury stock, at cost		(1,433,000)
Additional paid-in capital	299,320,000	295,135,000
Accumulated deficit	(47,016,000)	(74,971,000)
Accumulated other comprehensive loss	(832,000)	(3,809,000)
Total equity	251,478,000	214,928,000
TOTAL	$ 869,131,000	$ 730,271,000