Shareholders' Equity - Schedule of Regular Quarter Dividend Payments (Details) - USD ($) $ / shares in Units, $ in Thousands	Jun. 12, 2019		Dec. 13, 2018		Sep. 11, 2018		Jun. 06, 2018		Apr. 10, 2018		Dec. 13, 2017
Equity [Abstract]
Dividend Declared, Date	Jun. 12, 2019		Dec. 13, 2018		Sep. 11, 2018		Jun. 06, 2018		Apr. 10, 2018		Dec. 13, 2017
Dividend Declared, Price Per Share	$ 0.28		$ 0.24		$ 0.24		$ 0.24		$ 0.22		$ 0.22
Dividend Paid on or Before Date	Jul. 03, 2019	[1]	Jan. 03, 2019	[2]	Oct. 02, 2018	[2]	Jul. 03, 2018	[2]	Apr. 30, 2018	[2]	Jan. 03, 2018	[2]
Dividend Paid on or Before Date, Amount	$ 2,826		$ 2,422		$ 2,422		$ 2,422		$ 2,220		$ 2,220

[1] 10,094,322

[2] 10,091,822