Stockholders' Equity (Narratives) (Details) - USD ($)				1 Months Ended		3 Months Ended	9 Months Ended
	Jan. 24, 2020	Nov. 07, 2019	Nov. 08, 2018	Feb. 29, 2020	Nov. 30, 2019	Mar. 31, 2020	Mar. 31, 2020	Mar. 31, 2019	Nov. 02, 2018
Class Of Stock [Line Items]
Stock repurchase, authorized amount				$ 100,000,000.0					$ 60,000,000.0
Maximum amount of common stock may be repurchased in calendar year						$ 35,000,000.0	$ 35,000,000.0
Stock repurchase, increase in authorized amount				40,000,000.0
Stock repurchase decrease in authorized amount				$ 30,000,000.0
Stock repurchase, extended period				3 years
Stock repurchase, extended period, effective date				Feb. 05, 2020
Payment for intial delivery of shares							$ 30,000,000	$ 15,000,000
Equity forward contract						$ 4,821,000
Total number of shares repurchased						381,000	4,232,000	2,366,000
Accelerated Share Repurchase Agreement "November 2019"
Class Of Stock [Line Items]
Payment for intial delivery of shares					$ 30,000,000.0
Initial delivery of shares repurchased					3,850,000
Value of initial share delivery repurchased					$ 25,200,000
Equity forward contract					$ 4,800,000
Forward contract settlement date					Jan. 24, 2020
Additional shares of common stock received	381,505
Total number of shares repurchased							4,231,505
Average cash purchase price paid							$ 7.09
2013 Equity Incentive Plan
Class Of Stock [Line Items]
Increase in authorized shares for issuance		7,000,000
2014 Employee Stock Purchase Plan
Class Of Stock [Line Items]
Increase in authorized shares for issuance			7,500,000