The amount of cash deposited in financial institutions as of the balance sheet date that is insured by the Federal Deposit Insurance Corporation.

No definition available.

Name:	us-gaap_CashFDICInsuredAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Commitments and Contingencies Cash in Excess of FDIC Limits (Details) - USD ($) $ in Thousands	Feb. 04, 2019	Dec. 31, 2018
Cash in Excess of FDIC limits [Line Items]
Cash, FDIC Insured Amount		$ 250
Subsequent Event [Member]
Cash in Excess of FDIC limits [Line Items]
Cash, Uninsured Amount	$ 593