Consolidated Balance Sheets Parenthetical $ in Thousands	Mar. 31, 2022 USD ($) shares	Mar. 31, 2022 € / shares	Dec. 31, 2021 USD ($) shares	Dec. 31, 2021 € / shares
Statement of Financial Position [Abstract]
Allowance for doubtful accounts | $	$ 3,448		$ 3,225
Accumulated Depreciation | $	306,542		306,461
Accumulated amortization | $	$ 17,713		$ 17,540
Preferred stock, par value per share | € / shares		€ 0.02		€ 0.02
Preferred stock, shares authorized	6,000,000		6,000,000
Preferred stock, shares issued	0		0
Preferred stock, shares outstanding	0		0
Common stock, par value per share | € / shares		€ 0.02		€ 0.02
Common stock, shares authorized	200,000,000		200,000,000
Common stock, shares, issued	46,454,264		46,454,264
Common shares, outstanding	46,283,677		46,349,397
Treasury stock, shares	170,587		104,867