CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenues	$ 92,868	$ 49,521	$ 244,326	$ 248,880
Cost and expenses
General and administrative expenses	11,114	10,701	33,505	38,380
Depreciation	6,921	7,763	22,148	24,753
Amortization of intangibles	4,029	4,091	12,212	12,376
Impairment of goodwill	0	0	0	296,196
(Gain) loss on revaluation of contingent liabilities	21	297	(124)	781
(Gain) loss on sale of property and equipment	(17)	(535)	660	(2,900)
Loss from operations	(8,079)	(25,279)	(41,875)	(355,900)
Interest expense	7,968	9,130	24,534	28,144
Interest income	(3)	(43)	(24)	(593)
Gain on extinguishment of debt	0	(15,798)	(17,618)	(37,501)
Other income	(34)	(29)	(103)	(29)
Loss before income taxes	(16,010)	(18,539)	(48,664)	(345,921)
Provision (benefit) for income taxes	41	(37)	163	(2,348)
Net loss	$ (16,051)	$ (18,502)	$ (48,827)	$ (343,573)
Loss per share
Basic (in usd per share)	$ (0.53)	$ (0.62)	$ (1.61)	$ (11.56)
Diluted (in usd per share)	$ (0.53)	$ (0.62)	$ (1.61)	$ (11.56)
Weighted average shares outstanding
Basic (in shares)	30,449,286	29,849,753	30,252,670	29,708,673
Diluted (in shares)	30,449,286	29,849,753	30,252,670	29,708,673
Other comprehensive income (loss), net of tax
Foreign currency translation adjustments, net of $0 tax in each period	$ (102)	$ 132	$ (32)	$ (264)
Total other comprehensive income (loss), net of tax	(102)	132	(32)	(264)
Total comprehensive loss	(16,153)	(18,370)	(48,859)	(343,837)
Service
Revenues	65,916	35,639	172,932	187,713
Cost and expenses
Cost of revenues (exclusive of depreciation and amortization shown separately below)	59,614	38,445	160,141	179,508
Product
Revenues	26,952	13,882	71,394	61,167
Cost and expenses
Cost of revenues (exclusive of depreciation and amortization shown separately below)	$ 19,265	$ 14,038	$ 57,659	$ 55,686