Amount of increase (decrease) in allowance for credit loss on accounts receivable.

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This item represents a non-contingent liability for the fair value of an obligation to stand ready to perform over the term of a guaranty issued in the event that specified triggering events or conditions occur.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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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Summary of Significant Accounting Policies Additional Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle
Guaranty liabilities	$ 32,652	$ 32,430	$ 15
Stockholders equity	572,713		599,664
Increase in reserve	$ 2,800
Cumulative effect of the credit loss standard adoption, net of tax
New Accounting Pronouncements or Change in Accounting Principle
Guaranty liabilities			17,935
Accounts Receivable \| Cumulative effect of the credit loss standard adoption, net of tax
New Accounting Pronouncements or Change in Accounting Principle
Stockholders equity			4,300
Loans Receivable \| Cumulative effect of the credit loss standard adoption, net of tax
New Accounting Pronouncements or Change in Accounting Principle
Stockholders equity			$ 3,700