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Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Numerator:
Net income	$ 8,945	$ 4,338
Dividends declared on unvested share-based compensation	(35)	0
Net income available to common stockholders	$ 8,910	$ 4,338
Denominator:
Weighted-average number of common shares outstanding—basic (in shares)	202,817,124	201,145,014
Effect of dilutive securities:
Weighted-average number of common shares outstanding—diluted (in shares)	203,537,829	201,775,832
Earnings per share:
Basic earnings per share (in dollars per share)	$ 0.04	$ 0.02
Diluted earnings per share (in dollars per share)	$ 0.04	$ 0.02
Unvested restricted common stock
Effect of dilutive securities:
Unvested restricted common stock and shares related to unvested PSUs (in shares)	49,761	294,613
Shares related to unvested PSUs
Effect of dilutive securities:
Unvested restricted common stock and shares related to unvested PSUs (in shares)	670,944	336,205

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Amount of paid and unpaid cash, stock, and paid-in-kind (PIK) dividends declared and applicable to holders of share-based compensation, for example, but not limited to, non-vested shares, stock options, or restricted stock units.

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