Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net Income (Loss) Attributable to Parent	$ 23,395	$ 16,170	$ 69,182	$ 45,109
Other comprehensive income (loss), net of tax:
Unrealized gains (losses) on available for sale securities arising during the period	3,697	(5,917)	19,378	(20,941)
Change in minimum pension liability	0	81	0	241
Other comprehensive income (loss)	3,697	(5,836)	19,378	(20,700)
Comprehensive income	$ 27,092	$ 10,334	$ 88,560	$ 24,409

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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