Accounts Receivable (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Accounts Receivable
Premiums receivable	$ 18,441,000		$ 18,441,000		$ 16,034,000
Other receivables	2,684,000		2,684,000		603,000
Total accounts receivable	21,125,000		21,125,000		16,637,000
Accounts receivable, net	21,125,000		21,125,000		$ 16,637,000
Provision for doubtful accounts	$ 0	$ 0	$ 0	$ 0
Premiums receivable
Accounts Receivable
Threshold period unpaid for write-off of mortgage insurance premiums			90 days