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Stockholders' Equity and Regulatory Capital Reconciliation of stockholders' equity to federal regulatory capital (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Sep. 30, 2008
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]
Stockholders’ equity of the Corporation	$ 232,422	$ 206,162	$ 194,156
Net unrealized and accumulated losses on specific items	1,457	933
Disallowed servicing assets	(727)	(587)
Disallowed goodwill and other intangibles	(10,433)	(10,466)
Junior subordinated notes, carrying amount	10,076	10,062		$ 10,300
Tier 1 capital	232,795	206,104
Allowable general valuation allowances and subordinated debt	48,950	52,503
Total capital	$ 281,745	$ 258,607

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Goodwill and intangibles not allowed to be included in Tier 1 Capital per the regulatory guidelines.

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Servicing assets and purchased credit card relationships not allowed to be included in Tier 1 Capital per the regulatory guidelines.

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Amount before tax of increase (decrease) in accumulated equity from transactions and other events and circumstances from non-owner sources, attributable to parent. Excludes net income (loss), and accumulated changes in equity from transactions resulting from investments by owners (distributions to owners).

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Amount of total capital as defined by regulatory framework.

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Including the current and noncurrent portions, the carrying value of junior subordinated long-term debt owed to unconsolidated subsidiary trusts as of the balance sheet date. Such debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets and was initially scheduled to be repaid after one year or beyond the normal operating cycle if longer.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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Amount of Tier 1 risk-based capital as defined by regulatory framework.

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