Income (Loss) Per Share (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Weighted average shares outstanding - basic (in shares)	54,974	51,440	54,943	51,395
Effect of dilutive stock-based compensation (in shares)		118		167
Effect of dilutive put rights (in shares)		268		268
Net income available to common stockholders - assuming dilution (in shares)	54,974	51,826	54,943	51,830