Stockholders' Equity - Stock Option Activity (Details)	9 Months Ended
	Sep. 30, 2020 $ / shares shares
Number of Options Outstanding
Outstanding at beginning of period (in shares) | shares	329,698
Options exercised (in shares) | shares	(15,169)
Options expired (in shares) | shares	(219)
Outstanding at end of period (in shares) | shares	314,310
Weighted– Average Exercise Price
Outstanding at beginning of period (in dollars per share) | $ / shares	$ 8.57
Options exercised (in dollars per share) | $ / shares	5.77
Options expired (in dollars per share) | $ / shares	1.79
Outstanding at end of period (in dollars per share) | $ / shares	$ 8.71