DEBT (Details) (USD $)	3 Months Ended		12 Months Ended							1 Months Ended		3 Months Ended	7 Months Ended	12 Months Ended		3 Months Ended		12 Months Ended					3 Months Ended		3 Months Ended	6 Months Ended	12 Months Ended								3 Months Ended			3 Months Ended		3 Months Ended					12 Months Ended
	Mar. 31, 2013 Residence	Mar. 31, 2012	Dec. 31, 2010	Dec. 31, 2012	Dec. 31, 2012 Base Rate [Member]	May 18, 2012 Base Rate [Member]	Mar. 31, 2013 Prime Rate [Member]	Dec. 31, 2012 Prime Rate [Member]	May 18, 2012 LIBOR Rate [Member]	May 18, 2012 $125 Million Credit Facility [Member]	Feb. 28, 2011 $125 Million Credit Facility [Member] Subsidiary	Mar. 31, 2013 $125 Million Credit Facility [Member]	Dec. 31, 2012 $125 Million Credit Facility [Member] Quarter Property Unit	Dec. 31, 2012 $125 Million Credit Facility [Member] Unit	Feb. 18, 2011 $125 Million Credit Facility [Member] Residence	Mar. 31, 2013 $125 Million Credit Facility Amendment 3 [Member]		Dec. 31, 2012 $125 Million Credit Facility Amendment 3 [Member]		Mar. 31, 2013 Letters of Credit [Member]	Mar. 31, 2013 Maximum [Member] $125 Million Credit Facility Amendment 3 [Member]	Mar. 31, 2013 Minimum [Member] $125 Million Credit Facility Amendment 3 [Member]	Mar. 31, 2013 Mortgage note, bearing interest at 6.24%, due 2014 [Member] Loan Residence	Dec. 31, 2012 Mortgage note, bearing interest at 6.24%, due 2014 [Member]	Mar. 31, 2013 Mortgage note, bearing interest at 6.50%, due 2015 [Member]	Jun. 12, 2009 Mortgage note, bearing interest at 6.50%, due 2015 [Member]	Dec. 31, 2010 Mortgage note, bearing interest at 6.50%, due 2015 [Member]	Dec. 31, 2009 Mortgage note, bearing interest at 6.50%, due 2015 [Member] Unit	Dec. 31, 2012 Mortgage note, bearing interest at 6.50%, due 2015 [Member]	Sep. 30, 2010 Mortgage note, bearing interest at 6.50%, due 2015 [Member]	Sep. 30, 2010 Mortgage note, bearing interest at 6.50%, due 2015 [Member] Iowa [Member] Residence	Sep. 30, 2010 Mortgage note, bearing interest at 6.50%, due 2015 [Member] Indiana [Member] Residence	Sep. 30, 2010 Mortgage note, bearing interest at 6.50%, due 2015 [Member] Michigan [Member] Residence	Sep. 30, 2010 Mortgage note, bearing interest at 6.50%, due 2015 [Member] Wisconsin [Member] Residence	Mar. 31, 2013 Mortgage note, bearing interest at 7.07%, due 2018 [Member]	Dec. 31, 2012 Mortgage note, bearing interest at 7.07%, due 2018 [Member]	Mar. 31, 2013 Mortgage note, bearing interest at 7.07%, due 2018 [Member] Texas [Member] Residence	Mar. 31, 2013 Oregon Trust Deed Notes, weighted average interest rate of 7.33%, maturing from 2021 through 2026 [Member] Residence	Dec. 31, 2012 Oregon Trust Deed Notes, weighted average interest rate of 7.33%, maturing from 2021 through 2026 [Member]	Mar. 31, 2013 Oregon Trust Deed Notes, weighted average interest rate of 7.33%, maturing from 2021 through 2026 [Member] Maximum [Member]	Mar. 31, 2013 Oregon Trust Deed Notes, weighted average interest rate of 7.33%, maturing from 2021 through 2026 [Member] Minimum [Member]	Mar. 31, 2013 HUD Insured Mortgages, interest rates ranging from 5.66% to 5.85%, due 2032 [Member]	Sep. 30, 2007 HUD Insured Mortgages, interest rates ranging from 5.66% to 5.85%, due 2032 [Member] Loan	Dec. 31, 2012 HUD Insured Mortgages, interest rates ranging from 5.66% to 5.85%, due 2032 [Member]	Dec. 31, 2011 HUD Insured Mortgages [Member]	Dec. 31, 2001 HUD Insured Mortgages [Member] Agreement	Jun. 30, 2011 HUD Insured Mortgages [Member]
Summary of long-term debt [Abstract]
Total debt	$ 184,222,000			$ 181,715,000												$ 113,000,000	[1]	$ 108,000,000	[1]				$ 28,627,000	$ 30,708,000	$ 23,580,000				$ 23,834,000						$ 8,346,000	$ 8,391,000		$ 6,859,000	$ 6,946,000			$ 3,810,000		$ 3,836,000
Less current maturities	(143,300,000)			(114,575,000)
Total long-term debt	40,922,000			67,140,000
Basis spread on interest rate (in hundredths)					3.50%	2.00%	325.00%	3.25%	3.00%				2.50%	2.50%
Interest rate on mortgage notes (in hundredths)																							6.24%		6.50%										7.07%
Weighted average interest rate on notes (in hundredths)																																						7.33%
Interest rate, minimum (in hundredths)																																						0.00%				5.66%
Interest rate, maximum (in hundredths)																																						9.00%				5.85%
Number of subsidiaries guaranteed the credit facility											3
Number of residences	210														42
Carrying value of residences															114,100,000
Unused capacity, commitment fee percentage (in hundredths)										0.50%	0.375%							0.625%
Annual capital expenditures, maximum										35,000,000			15,000,000
Debt instrument amendment fee										400,000
Multiple of net income for specified quarters													3.75
Number of prior fiscal quarters for consolidated net income													4
Occupancy percentage of residence to be removed from collateral pool (in hundredths)													62.00%
Percentage of aggregate value of the collateral pool to exceed the borrowing base (in hundredths)													70.00%
Number of collateral properties added													5
Number of units in properties added													195															392
Proposed voluntary repayment													4,100,000
Number of condominium units													8	8
Increase in interest rate (in hundredths)																		0.0100
Fair market value of mortgages	25,000,000
Unused availability on credit facility to be maintained												2,100,000	8,000,000	8,000,000		4,000,000
Value of mortgages to be held by lender																17,000,000
Debt default, amount												10,000,000				2,500,000
Number of days financial statements must be submitted to credit facility																45 days
Number of weeks in cash flow forecasts																13-week
Minimum amount of new credit facility																15,000,000
Payments for fees to lenders																625,000
Cross-default provisions												23,600,000
Outstanding borrowings												113,000,000	108,000,000	108,000,000						108,000,000			28,600,000
Facility provided as collateral for outstanding line of credit												5,900,000		5,000,000
Mortgage note amortization period																							25 years			20 years	15 years								25 years
Number of living residences mortgaged																							24								2	3	1	1			3	6
Carrying value of residences mortgaged																							50,700,000							24,100,000					10,200,000			9,300,000				4,200,000
Monthly principal and interest payments amount																							300,000												64,200
Balloon payment amount																							29,600,000												7,200,000
Long term debt maturity date																							Jan. 31, 2014		Sep. 30, 2015										Jul. 31, 2018					Mar. 31, 2026	Jun. 30, 2021	Sep. 30, 2032
Number of loans to be repaid																							2
Face amount of debt instrument																										14,000,000				26,300,000					9,000,000												2,800,000
Repayment of mortgage debt	2,506,000	635,000																																											2,800,000
Additional amount of loan																											12,250,000
Annual prepayment of loan without fees, maximum (in hundredths)																											10.00%
Prepayment fee for loan in year one (in hundredths)																											3.00%
Prepayment fee for loan in year two (in hundredths)																											3.00%
Prepayment fee for loan in year three (in hundredths)																											2.00%
Prepayment fee for loan in year four (in hundredths)																											2.00%
Prepayment fee for loan, thereafter (in hundredths)																											1.00%
Closing cost of debt																											400,000
Closing costs amortization period																											5 years
Interest rate on mortgage note for remaining term (in hundredths)																																						4.16%				5.74%
Number of loan agreements																																														3
Number of loans refinanced																																											2
Number of charges for lease termination and settlement fee												1
Unfavorable Market Value of Debt Adjustment [Abstract]
Unfavorable market value of debt adjustment			3,200,000
Unfavorable market value adjustment amortization amount	13,368	13,005
The increased margins on base rate and LIBOR loans (in hundredths)																					3.00%	2.00%
Letters of Credit [Abstract]
Letters of credit outstanding amount												5,900,000	5,000,000	5,000,000
Letter of credit related to workers compensation insurance												5,800,000	4,800,000	4,800,000
Letters of credit for leased properties and liens												100,000	200,000	200,000
Future Liquidity [Abstract]
Outstanding debt	184,222,000			181,715,000												113,000,000	[1]	108,000,000	[1]				28,627,000	30,708,000	23,580,000				23,834,000						8,346,000	8,391,000		6,859,000	6,946,000			3,810,000		3,836,000
Current maturities of long-term debt	143,300,000			114,575,000
Line of credit facility amount outstanding												113,000,000	108,000,000	108,000,000						108,000,000			28,600,000
Company's requirement to raise minimum short term capital	15,000,000
Minimum short term capital funds raised	$ 3,000,000

[1] On December 31, 2012, commencing with the Third Amendment, the facility bears interest at the base rate plus 350 basis points. At March 31, 2013 and December 31, 2012, prime was 3.25%. Pursuant to the Third Amendment (as defined below), the debt associated with the U.S. Bank Credit Facility (as defined below) now expires September 30, 2013.