Redeemable Shares, Shareholders' Equity and Dividend Restrictions - Additional Information (Detail) (USD $)	12 Months Ended				12 Months Ended		12 Months Ended			1 Months Ended		1 Months Ended								12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011 Dividend Declared [Member]	Dec. 31, 2013 Redeemable Preferred Stock [Member]	Dec. 31, 2013 Dental Care Plus [Member]	Dec. 31, 2012 Dental Care Plus [Member]	Dec. 31, 2011 Dental Care Plus [Member]	Feb. 28, 2013 Class A Redeemable Common Shares [Member]	Dec. 31, 2013 Class A Redeemable Common Shares [Member]	Mar. 31, 2012 Class B Redeemable Common Shares [Member]	Dec. 31, 2013 Class B Redeemable Common Shares [Member]	Dec. 31, 2013 Institutional Preferred Shares-2012 Series [Member]	Dec. 31, 2012 Institutional Preferred Shares-2012 Series [Member]	Dec. 31, 2013 Institutional Preferred Shares-2010 Series [Member]	Dec. 31, 2012 Institutional Preferred Shares-2010 Series [Member]	Dec. 31, 2011 Institutional Preferred Shares-2010 Series [Member]	Dec. 31, 2010 Institutional Preferred Shares-2010 Series [Member]	Dec. 31, 2013 Provider Preferred-2009 Series [Member]	Dec. 31, 2012 Provider Preferred-2009 Series [Member]
Schedule Of Equity [Line Items]
Subscription payment per share	$ 894	$ 815
Dividend declared per share										$ 32.60		$ 21.00
Option to purchase shares											1		1
Total Dividend paid					0		0		0
Number of share investor agreed to purchase	2,300													1,000	1,000	300	300		300
Preferred Shares authorized	100,000													1,000	1,000	300	300			5,000	5,000
Purchase price	$ 1,000	$ 1,000		$ 1,000
Percentage of cumulative/annual cash dividend of year end book value	5.00%	5.00%																		5.00%
Accrued Dividend																123,000	67,000	16,000
Dividends paid	123,000	83,000	7,000
Preferred Shares outstanding						92,700								1,000	1,000	300	300			0	0
Percentage of net worth								10.00%
Net worth								250,000
Dividend received from subsidiary								360,000
Total Dividend	856,000
Dividends paid by Dental Care Plus							(i) 10% of net worth (as of the preceding December 31), or (ii) net income for the prior year, and only if net worth exceeds $250,000 and only out of unassigned surplus. In December 2012, Dental Care Plus declared and paid a dividend to the Company totaling $360,000.
Basis net worth							8,560,000	7,396,000
Net Income/basis net income (loss) for Dental Care Plus	$ 1,281,606	$ 1,318,017	$ 590,914				$ 1,191,000	$ 1,108,000	$ 703,000