Commitments and Contingencies - Additional Information (Details) ¥ in Billions		2 Months Ended	9 Months Ended
	Oct. 31, 2020 USD ($)	May 03, 2019 USD ($)	Sep. 30, 2020 USD ($) contract	Sep. 30, 2019 USD ($)	Feb. 29, 2020 USD ($)	Jul. 26, 2019 USD ($)	Apr. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2019 JPY (¥)	Jun. 24, 2016 USD ($)
Other Commitments [Line Items]
Unfunded Commitments for Capital Contributions			$ 11,998,000
Short-Term Borrowings			0	$ 30,000,000
Cash Paid For Contingent Consideration			81,000	2,008,000
Business Combination, Contingent Consideration, Liability			252,000
Asset Acquisition, Contingent Consideration, Liability				4,463,000
Derivative Asset, Notional Amount					$ 38,908,000		$ 14,815,000
Margin Deposit Assets							$ 680,000
Derivative, Gain (Loss) on Derivative, Net			$ (3,998,000)	$ 59,000
Number of Foreign Currency Derivatives Held | contract			0
Foreign Exchange Forward [Member]
Other Commitments [Line Items]
Derivative Asset, Notional Amount								$ 35,598,000	¥ 3.8
BBVA Bancomer [Member]
Other Commitments [Line Items]
Maximum Borrowing Capacity			$ 6,783,000
BBVA Bancomer [Member] | Inter-Bank Balance Interest Rate [Member]
Other Commitments [Line Items]
Debt Instrument, Basis Spread on Variable Rate			0.10%
Secured Line of Credit [Member] | PNC Bank [Member]
Other Commitments [Line Items]
Maximum Borrowing Capacity										$ 30,000,000
Amount Outstanding During Period		$ 30,000,000
Unsecured Line of Credit [Member] | PNC Bank [Member]
Other Commitments [Line Items]
Maximum Borrowing Capacity						$ 20,000,000
Subsequent Event [Member] | Secured Line of Credit [Member] | PNC Bank [Member] | London Interbank Offered Rate (LIBOR) [Member]
Other Commitments [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.50%
Subsequent Event [Member] | Unsecured Line of Credit [Member] | PNC Bank [Member]
Other Commitments [Line Items]
Maximum Borrowing Capacity	$ 30,000,000
Subsequent Event [Member] | Unsecured Line of Credit [Member] | PNC Bank [Member] | London Interbank Offered Rate (LIBOR) [Member]
Other Commitments [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.80%