Summary of Significant Accounting Policies - Common Shares Outstanding (Details)	12 Months Ended
	Dec. 31, 2019 shares
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	4,217,596
Issuance of shares in acquisition (in shares)	11,145
Vesting of restricted stock unit awards (in shares)	7,604
Shares withheld to cover taxes upon vesting of restricted stock unit awards (in shares)	(883)
Other (in shares)	71
Ending balance (in shares)	4,235,533