Commitments and Contingencies (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2013 acre	Dec. 31, 2012
Commitments and Contingencies (Textual) [Abstract]
Acres of land subject to water contracts	5,488
Estimated future minimum annual payments	$ 2,500,000
Letter of credit period	2 years
Letter of credit renewal period	2 years
Expected reimbursements in current fiscal year	14,000,000
Special taxes paid		606,000
Interest rate held by TCWD in KWBA	2.00%
Standby letter of credit [Member]
Commitments and Contingencies (Textual) [Abstract]
Standby letter of credit	5,426,000
Letter of credit [Member]
Commitments and Contingencies (Textual) [Abstract]
Annual cost related to letter of credit	83,000
West CFD [Member]
Commitments and Contingencies (Textual) [Abstract]
Acres of land released from land liens	420
Standby letter of credit	30,000,000
Additional bond debt authorized to be sold in future	0
Additional reimbursement funds	0
East CFD [Member]
Commitments and Contingencies (Textual) [Abstract]
Acres of land released from land liens	1,931
Standby letter of credit	39,750,000
Additional bond debt authorized to be sold in future	80,250,000
Additional reimbursement funds	$ 23,000,000