Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash	$ 19,583	$ 14,405
Accounts receivable, net	159,569	139,547
Inventories	116,561	114,851
Other current assets	14,629	11,752
Total current assets	310,342	280,555
Property, plant and equipment, net	328,214	322,953
Goodwill, net	451,447	450,311
Intangible assets, net	250,112	255,981
Investment in joint venture	42,387	40,694
Other non-current assets	8,541	9,892
Total assets	1,391,043	1,360,386
Current liabilities:
Accounts payable	77,673	75,719
Accrued salaries, wages and benefits	23,450	24,996
Income taxes payable	8,014	2,125
Current maturities of long-term debt	10,753	12,751
Current portion of obligation under capital lease	3,664	3,762
Other current liabilities	26,633	19,263
Total current liabilities	150,187	138,616
Non-current deferred tax liabilities	99,051	99,591
Long-term debt, net of current portion	799,450	785,713
Accrued post-employment benefits	5,512	5,765
Obligation under capital lease, net of current portion	5,063	5,851
Other	3,901	9,651
Total liabilities	1,063,164	1,045,187
Total stockholders' equity	327,879	315,199
Total liabilities and stockholders' equity	$ 1,391,043	$ 1,360,386