Stock Based Compensation - Restricted Shares (Details) - The 2009 Stock Incentive Plan - Restricted Stock Units (RSUs) shares in Thousands	6 Months Ended
	Jun. 30, 2022 $ / shares shares
Number of Awards
Unvested RSU Awards Outstanding beginning of period (in shares) | shares	823
Vested (in shares) | shares	(127)
Unvested RSU Awards Outstanding end of period (in shares) | shares	696
Weighted Average Grant Date Fair Value per Award
Unvested RSU Awards Outstanding beginning of period (in dollars per share) | $ / shares	$ 14.07
Vested (in dollars per share) | $ / shares	16.73
Unvested RSU Awards Outstanding end of period (in dollars per share) | $ / shares	$ 13.59