Capital Stock - Textual (Details)				3 Months Ended	6 Months Ended
	Apr. 12, 2019 shares	Feb. 08, 2018	Jul. 23, 2012 shares	Jun. 30, 2019 shares	Jun. 30, 2019 shares	Dec. 31, 2018 shares	Apr. 19, 2018 shares	Apr. 18, 2018 shares
Class of Stock [Line Items]
Conversion ratio		2
Common stock, shares authorized (in shares)				175,000,000	175,000,000	175,000,000	175,000,000	120,000,000
Number of shares authorized to be repurchased (in shares)			1,700,000
Percent of outstanding stock (as percent)			2.00%
Number of additional shares to be repurchased (in shares)			308,272
Stock issued for acquisition (in shares)				3,999,623	3,999,623
Repurchase of common stock (in shares)				0	0
Series A Preferred Stock
Class of Stock [Line Items]
Stock issued for acquisition (in shares)	40,000
Series B Preferred Stock
Class of Stock [Line Items]
Stock issued for acquisition (in shares)	2,000