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Concentrations of Credit Risk (Tables) | 12 Months Ended
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Dec. 31, 2017
Risks And Uncertainties [Abstract] |
Company's Demand Deposits and Temporary Cash Investments | At December 31, 2017 and 2016, the Company’s demand deposits and temporary cash investments consisted of the following (in thousands):
|  | 2017 |  |  | 2016 |
Deposits in FDIC and SIPC-insured institutions under insurance limits |  | $ | 13,860 |  |  | $ | 846 |
Deposits in FDIC and SIPC-insured institutions over insurance limits |  |  | 106,849 |  |  |  | 12,866 |
Deposits in foreign banks |  |  | 21,479 |  |  |  | 27,557 |
|  |  | 142,188 |  |  |  | 41,269 |
Less outstanding checks and other reconciling items |  |  | (99,360 | ) |  |  | (6,117 | )
Cash and cash equivalents |  | $ | 42,828 |  |  | $ | 35,152 |

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- Definition Tabular disclosure of the components of cash and cash equivalents. + References No definition available. + Details
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