Basis of Presentation and Summary of Significant Accounting Policies - Share Repurchase Program (Details) - USD ($) $ / shares in Units, shares in Thousands	3 Months Ended	6 Months Ended		9 Months Ended		12 Months Ended
	Jun. 30, 2019	Mar. 31, 2020	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019	Sep. 30, 2019	Dec. 31, 2018
Accounting Policies [Abstract]
Authorized amount repurchase of common stock							$ 50,000,000.0
Share repurchases	$ 10,620,000	$ 3,300,000	$ 24,000,000.0	$ 3,327,000	$ 34,624,000	$ 34,600,000
Completed common stock repurchase (in shares)		362	2,200
Average price per share (in dollars per share)		$ 9.20	$ 10.89
Remaining authorized repurchase amount				$ 12,000,000.0