Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 65,315	$ 24,586
Receivables, net of allowance of $8,912 and $9,918	188,772	194,066	[1]
Inventory	35,754	36,854
Income tax receivable	3,349	1,474
Prepaid expenses and other current assets	59,868	26,752
Total current assets	353,058	283,732
Property, plant and equipment, net	161,359	170,309
Intangible assets, net of accumulated amortization of $124,197 and $111,318	89,898	103,282
Operating lease right-of-use assets	60,700	63,869
Goodwill	25,243	91,351
Defined benefit pension asset	2,902	0
Other assets, net	10,533	11,642
Deferred income taxes	792	6,790
Total assets	704,485	730,975
Current liabilities:
Current portion of long-term debt and finance lease obligations	669	337
Current portion of operating lease obligations	16,176	17,375
Accounts payable	46,181	42,148
Other accrued liabilities	121,099	73,144
Total current liabilities	184,125	133,004
Deferred income taxes	4,185	4,375
Long-term debt and finance lease obligations	405,191	312,159
Operating lease obligations	49,221	52,207
Defined benefit pension liability	0	5,282
Other long-term liabilities	9,896	9,345
Total liabilities	652,618	516,372
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; 31,214,714 and 30,874,437 shares issued	9,359	9,257
Additional paid-in capital	444,824	422,589
Accumulated deficit	(375,584)	(189,565)
Accumulated other comprehensive loss	(26,732)	(27,678)
Total equity	51,867	214,603
Total liabilities and equity	$ 704,485	$ 730,975

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