Earnings (Loss) Per Share - Narrative (Details) - shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of common stock warrant and common stock options exercised (in shares)	24,877	0
Number of common stock issued for stock warrant and stock options exercised (in shares)	19,232
Shares surrendered in lieu of cash payment (in shares)	5,645
Common Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Dilutive potential shares (in shares)	49,702,266	16,570,675