Stockholders' Equity - Schedule of 2017 Nonvested Share Activity (Details)	6 Months Ended
	Jun. 30, 2019 $ / shares shares
Number of Shares
Vested (in shares) | shares	(143,554)
Weighted Average Grant Date Fair Value Per Share
Vested (in dollars per share) | $ / shares	$ 28.41
2017 Plan
Number of Shares
Non-vested, beginning balance (in shares) | shares	457,150
Non-vested, ending balance (in shares) | shares	313,596
Weighted Average Grant Date Fair Value Per Share
Non-vested, beginning balance (in dollars per share) | $ / shares	$ 24.29
Non-vested, ending balance (in dollars per share) | $ / shares	$ 22.70