ORGANIZATION AND BUSINESS: (Details)	9 Months Ended	12 Months Ended
	Jun. 30, 2013	Sep. 30, 2012
ORGANIZATION AND BUSINESS
Minimum period for which entity has provided professional services to the U.S. Government (years)	25 years
Number of employees (employee)	1,100
Minimum number of locations in which entity operates (location)	25
Number of integrated business areas of DLH Solutions (business area)	3
Revenue concentration | Geographic concentration | Healthcare Delivery Solutions
ORGANIZATION AND BUSINESS
Concentration risk percentage (less than 1% for Contingency/Staff Augmentation) (percent)	54.00%	54.00%
Revenue concentration | Geographic concentration | Logistics and Technical Services
ORGANIZATION AND BUSINESS
Concentration risk percentage (less than 1% for Contingency/Staff Augmentation) (percent)	45.00%	45.00%
Revenue concentration | Geographic concentration | Contingency/Staff Augmentation | Maximum
ORGANIZATION AND BUSINESS
Concentration risk percentage (less than 1% for Contingency/Staff Augmentation) (percent)	1.00%	1.00%
Revenue concentration | DoD and DVA | Customer concentration
ORGANIZATION AND BUSINESS
Concentration risk percentage (less than 1% for Contingency/Staff Augmentation) (percent)	97.00%	96.00%