Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Accounting Policies [Abstract]

Schedule of balances by type of long-lived assets

The balances by type were as follows at December 31:

	2020				2019
(In thousands)	Cost		Accumulated Depreciation/ Amortization		Cost		Accumulated Depreciation/ Amortization
Furniture and fixtures	$	2,220	$	(2,068)	$	2,148	$	(2,017)
Office equipment	848		(772)		848		(700)
Computer hardware	10,282		(8,987)		9,764		(7,728)
Purchased software	38,434		(37,404)		37,909		(36,716)
Costs of internal-use software	10,783		(8,959)		9,595		(8,185)
Leasehold improvements	4,787		(2,777)		4,644		(2,293)
Total	$	67,354	$	(60,967)	$	64,908	$	(57,639)