CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
CONSOLIDATED BALANCE SHEETS
Accounts receivable, net of allowance	$ 67,292	$ 69,807
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, rate (as a percent)	6.00%	6.00%
Preferred stock, liquidation preference (in dollars per share)	$ 50	$ 50
Preferred stock, shares outstanding	0	4,870
Common shares, par value (in dollars per share)	$ 0.05	$ 0.05
Common shares, shares authorized	32,000	32,000
Common shares, shares issued	9,295	8,383
Treasury shares, at cost	1,090	1,090