Note 11. Stockholders' Equity (Details) (USD $) In Thousands, except Share data, unless otherwise specified	1 Months Ended		3 Months Ended		12 Months Ended				12 Months Ended
	Aug. 31, 2011		Mar. 31, 2011		Dec. 31, 2012		Dec. 31, 2013	Dec. 31, 2011	Dec. 31, 2013 IHC Share Repurchase Program Member	Dec. 31, 2012 IHC Share Repurchase Program Member	Dec. 31, 2011 IHC Share Repurchase Program Member	Mar. 31, 2013 IHC Share Repurchase Program Member
Preferred Stock, Shares Authorized					100,000		100,000
Preferred Stock, Par or Stated Value Per Share					$ 1.00		$ 1.00
Common Stock Dividends, Shares					1,638,849	[1]
Stock Issued During Period, Value, Stock Dividend					$ 15,799	[1]
Common Stock, shares authorized					23,000,000		23,000,000	20,000,000
Shares issued to acquire noncontrolling interests, Shares	762,551	[2]	660,240	[3]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased												500,000
Treasury Stock, Shares, Acquired									334,305	100,246	123,417
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased									264,993

[1] Stock dividend payable to shareholders of record on 2/17/2012 with a distribution date of 3/5/2012.

[2] IHC issued shares in connection with an exchange offer whereby IHC offered to exchange shares of its common stock for properly tendered and accepted shares of common stock of AMIC.

[3] Shares issued in various private placements of unregistered securities under Section 4(2) of the Securities Act of 1933, as amended, in connection with purchases of AMIC common stock.