Significant Accounting Policies - Recently Issued Accounting Pronouncements (Details) - USD ($) $ in Thousands	Jan. 01, 2020	Dec. 31, 2020	Dec. 31, 2019
New accounting pronouncements or change in accounting principle
Retained earnings		$ 255,216	$ 214,225
Allowance for credit losses within other liabilities		$ 100
ASU 2016-13
New accounting pronouncements or change in accounting principle
Change in Accounting Principle, Accounting Standards Update, Adopted	true
New Accounting Pronouncement or Change in Accounting Principle, Prior Period Not Restated	true
Write off threshold	90 days
Adjustment | ASU 2016-13
New accounting pronouncements or change in accounting principle
Retained earnings			(100)
Accounts receivable, net and notes receivable, net			(100)
Allowance for credit losses, Accounts receivable and notes receivable			100
Operating lease receivables			0
Adjustment | ASU 2016-13 | Maximum
New accounting pronouncements or change in accounting principle
Allowance for credit losses within other liabilities			$ 100