Condensed Consolidated Balance Sheets - USD ($) $ in Thousands		Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents		$ 10,268	$ 18,288
Receivables, net of allowance of $12,582 and $15,182	[1]	263,505	268,352
Inventory		43,223	48,540
Income tax receivable		3,661	331
Prepaid expenses and other current assets		22,309	19,445
Total current assets		342,966	354,956
Property, plant and equipment, net		192,764	194,794
Intangible assets, net of accumulated amortization of $92,993 and $82,406		120,498	131,372
Operating lease right-of-use assets		64,605
Goodwill		280,670	281,650
Other assets, net		7,304	7,397
Deferred income taxes		6,613	7,652
Total assets		1,015,420	977,821
Current liabilities:
Current portion of long-term debt and finance lease obligations		4,033	569
Current portion of operating lease obligations		17,036
Accounts payable		49,955	44,074
Other accrued liabilities		94,689	95,308
Total current liabilities		165,713	139,951
Deferred income taxes		5,388	6,106
Long-term debt and finance lease obligations		341,684	356,814
Operating lease obligations		52,235
Defined benefit pension liability		8,888	10,940
Other long-term liabilities		1,853	6,910
Total liabilities		575,761	520,721
Commitments and contingencies
Equity:
Preferred stock, 500,000 shares authorized, none issued		0	0
Common stock, par value $0.30 per share, 60,000,000 shares authorized; 30,339,999 and 30,184,330 shares issued, respectively		9,100	9,053
Additional paid-in capital		408,837	400,989
Retained earnings		55,824	81,450
Accumulated other comprehensive loss		(34,102)	(34,392)
Total equity		439,659	457,100
Total liabilities and equity		$ 1,015,420	$ 977,821

[1] Includes billed and unbilled amounts, net of allowance for doubtful accounts. See Note 3 for details.