Stockholders' Equity (Narratives) (Details) - USD ($)				3 Months Ended	6 Months Ended
	Feb. 05, 2020	Nov. 07, 2019	Nov. 08, 2018	Dec. 31, 2020	Dec. 31, 2020	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	30,000,000.0
Stock repurchase, increase in authorized amount	$ 40,000,000.0
Stock repurchase, extended period	3 years
Stock repurchase, extended period, effective date	Feb. 05, 2020
Total number of shares repurchased				0	0
2013 Equity Incentive Plan
Class Of Stock [Line Items]
Increase in authorized shares for issuance		7,000,000.0
2014 Employee Stock Purchase Plan
Class Of Stock [Line Items]
Increase in authorized shares for issuance			7,500,000