CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 51,686	$ 58,832
Accounts receivable, net	138,893	149,753
Contract cost and recognized income not yet billed	26,307	20,451
Prepaid expenses and other current assets	22,919	19,610
Parts and supplies inventories	1,332	1,383
Assets held for sale	328	3,774
Current assets associated with discontinued operations	1,809	1,247
Total current assets	243,274	255,050
Property, plant and equipment, net	47,641	50,352
Intangible assets, net	84,424	86,862
Restricted cash	42,509	35,212
Other long-term assets	13,524	14,101
Total assets	431,372	441,577
Current liabilities:
Accounts payable and accrued liabilities	112,894	107,709
Contract billings in excess of cost and recognized income	11,061	9,892
Current portion of capital lease obligations	226	469
Notes payable and current portion of long-term debt	399	2,656
Accrued income taxes	3,009	3,108
Other current liabilities	6,662	6,759
Current liabilities associated with discontinued operations	2,719	4,027
Total current liabilities	136,970	134,620
Long-term debt	89,992	92,498
Deferred income taxes	403	120
Other long-term liabilities	36,961	35,516
Long-term liabilities associated with discontinued operations	1,364	1,423
Total liabilities	$ 265,690	$ 264,177
Contingencies and commitments (Note 12)
Stockholders’ equity:
Preferred stock, par value $.01 per share, 1,000,000 shares authorized, none issued	$ 0	$ 0
Common stock, par value $.05 per share, 105,000,000 shares authorized and 64,461,009 shares issued at March 31, 2016 (63,918,220 at December 31, 2015)	3,215	3,188
Additional paid-in capital	746,480	745,214
Accumulated deficit	(565,413)	(550,262)
Treasury stock at cost, 1,850,333 shares at March 31, 2016 (1,828,586 at December 31, 2015)	(14,774)	(14,731)
Accumulated other comprehensive loss	(3,826)	(6,009)
Total stockholders’ equity	165,682	177,400
Total liabilities and stockholders’ equity	$ 431,372	$ 441,577