Organization (Details)	Mar. 31, 2013 item	Mar. 31, 2012 item
Organization
Number of retail stores	65	53
Colorado
Organization
Number of retail stores	31
Texas
Organization
Number of retail stores	12
New Mexico
Organization
Number of retail stores	4
Kansas
Organization
Number of retail stores	3
Wyoming
Organization
Number of retail stores	2
Arizona
Organization
Number of retail stores	3
Montana
Organization
Number of retail stores	3
Utah
Organization
Number of retail stores	1
Oklahoma
Organization
Number of retail stores	1
Missouri
Organization
Number of retail stores	1
Idaho
Organization
Number of retail stores	1
Nebraska
Organization
Number of retail stores	2
Oregon
Organization
Number of retail stores	1