Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 24,586	$ 12,175
Receivables, net of allowance of $9,918 and $9,990	194,066	245,617	[1]
Inventory	36,854	39,195
Income tax receivable	1,474	316
Prepaid expenses and other current assets	26,752	20,275
Total current assets	283,732	317,578
Property, plant and equipment, net	170,309	191,951
Intangible assets, net of accumulated amortization of $111,318 and $96,797	103,282	117,019
Operating lease right-of-use assets	63,869	67,048
Goodwill	91,351	282,006
Other assets, net	11,642	4,426
Deferred income taxes	6,790	5,189
Total assets	730,975	985,217
Current liabilities:
Current portion of long-term debt and finance lease obligations	337	5,294
Current portion of operating lease obligations	17,375	17,100
Accounts payable	42,148	41,636
Other accrued liabilities	73,144	86,506
Total current liabilities	133,004	150,536
Deferred income taxes	4,375	6,996
Long-term debt and finance lease obligations	312,159	325,299
Operating lease obligations	52,207	54,436
Defined benefit pension liability	5,282	9,321
Other long-term liabilities	9,345	1,959
Total liabilities	516,372	548,547
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; 30,874,437 and 30,518,793 shares issued	9,257	9,153
Additional paid-in capital	422,589	409,034
Retained earnings (accumulated deficit)	(189,565)	48,673
Accumulated other comprehensive loss	(27,678)	(30,190)
Total equity	214,603	436,670
Total liabilities and equity	$ 730,975	$ 985,217

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