Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
ASSETS
Cash and cash equivalents	$ 123,257	$ 85,052
Receivables, net	193,306	318,600
Total	188,000	196,556
Deferred tax assets	5,075	11,013
Prepaid expenses and other current assets	14,884	12,615
Total current assets	524,522	623,836
Property, plant and equipment, net	297,764	283,361
Goodwill	90,644	91,893
Other intangible assets, net	13,315	15,666
Other assets	5,348	5,366
Total assets	931,593	1,020,122
LIABILITIES AND STOCKHOLDERS’ EQUITY
Short-term debt	9,237	11,648
Accounts payable	67,893	108,242
Accrued liabilities	35,972	53,342
Total current liabilities	113,102	173,232
Long-term debt, less current portion	172,497	172,498
Deferred tax liabilities	26,721	37,694
Other noncurrent liabilities	8,823	11,240
Total liabilities	321,143	394,664
Commitments and contingencies (Note 9)
Common stock, $0.01 par value, 200,000,000 shares authorized and 99,356,675 and 99,204,318 shares issued, respectively	994	992
Paid-in capital	525,965	521,228
Accumulated other comprehensive loss	(47,882)	(31,992)
Retained earnings	259,355	262,616
Treasury stock, at cost; 15,274,220 and 15,210,233 shares, respectively	(127,982)	(127,386)
Total stockholders’ equity	610,450	625,458
Total liabilities and stockholders' equity	$ 931,593	$ 1,020,122