Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 87,844	$ 81,689
Restricted cash	20	20
Accounts receivable, net of allowance of $2,090 and $2,077, respectively	51,879	41,743
Inventories	27,805	26,902
Prepaid expenses	8,069	4,210
Deposits and other	8,283	4,704
Total current assets	183,900	159,268
Property and equipment, net	75,263	81,040
Goodwill	285,464	286,042
Intangible assets	166,047	187,644
Deferred tax asset	6,358	6,762
Operating lease assets	11,371	9,763
Other assets	9,096	10,259
Total assets	737,499	740,778
Current liabilities
Accounts payable	11,596	9,547
Accrued liabilities	36,208	26,325
Current maturities of long-term debt	6,883	7,031
Total current liabilities	54,687	42,903
Long-term debt	599,863	601,560
Deferred tax liability, non-current	2,222	2,254
Operating lease liabilities, long-term	10,949	9,497
Other long-term liabilities	23,396	30,781
Total liabilities	691,117	686,995
Commitments and contingencies (Note 12)
Stockholders’ equity
Preferred stock at $0.01 par value; 50,000,000 shares authorized, no shares issued and outstanding	0	0
Common stock at $0.01 par value; 450,000,000 shares authorized at September 30, 2021 and at December 31, 2020; and 36,886,287 and 36,494,002 shares issued and outstanding at September 30, 2021 and December 31, 2020, respectively.	369	364
Additional paid-in capital	388,486	379,917
Accumulated deficit	(335,799)	(321,412)
Accumulated other comprehensive loss	(6,674)	(5,086)
Total stockholders’ equity	46,382	53,783
Total liabilities and stockholders’ equity	$ 737,499	$ 740,778