Accounts Receivable (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Accounts Receivable
Premiums receivable	$ 16,034,000	$ 13,210,000
Other receivables	603,000	2,600,000
Total accounts receivable	16,637,000	15,810,000
Accounts receivable, net	16,637,000	$ 15,810,000
Provision for doubtful accounts	$ 0
Premiums receivable
Accounts Receivable
Threshold period unpaid for write-off of mortgage insurance premiums	90 days