Stock Repurchase Program (Details) - $ / shares	3 Months Ended		6 Months Ended		179 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jul. 26, 2005
Equity [Abstract]
Maximum number of share authorized to repurchase under the program (in shares)						1,500,000
Common stock purchased during the period (in shares)	13,719	5,626	82,600	75,397	1,298,603
Average price per share (in dollars per share)	$ 64.03