Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Accounts Receivable, Allowance for Credit Loss, Current	$ 1,762	$ 1,352
Property, Plant, and Equipment, Accumulated Depreciation	$ 210,618	$ 197,936
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	90,000	90,000
Common stock, shares issued (in shares)	43,884	43,027
Common stock, shares outstanding (in shares)	43,884	43,027
Series D Preferred Stock
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	65	65
Preferred stock, shares issued (in shares)	65	65
Preferred stock, shares outstanding (in shares)	65	65