Stock Based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands		9 Months Ended
	Feb. 08, 2017	Sep. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares distribution period from grant date		1 year
5/10/2016 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Value per share on grant date (in dollars per share)		$ 24.89
Summary of stock Issuances [Abstract]
Number of shares issued (in shares)		17,677
Vesting date		May 10, 2017
Service Period		7/1/2016 - 6/30/2017
5/09/2017 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Value per share on grant date (in dollars per share)		$ 24.20
Summary of stock Issuances [Abstract]
Number of shares issued (in shares)		18,183
Vesting date		May 09, 2018
Service Period		7/1/2017 - 6/30/2018
8/31/2017 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Value per share on grant date (in dollars per share)		$ 21.90
Summary of stock Issuances [Abstract]
Number of shares issued (in shares)		1,257
Vesting date		May 09, 2018
Service Period		8/31/2017 - 6/30/2018
Restricted Stock Units (RSUs) [Member]
Summary of stock Issuances [Abstract]
Period restricted stocks will vest ratably from date of grant		3 years
Restricted Stock Units (RSUs) [Member] | Class B [Member] | Executives [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total value of shares issued	$ 480
Shares awarded (in shares)	20,181
Value per share on grant date (in dollars per share)	$ 23.80