Label	Element	Value
PIA High Yield (MACS) Fund \| Fidelity Government Portfolio [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	3.20%
PIA High Yield (MACS) Fund \| Veritiv Operating Co. [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	1.70%
PIA High Yield (MACS) Fund \| Innophos Holdings, Inc. [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	1.70%
PIA High Yield (MACS) Fund \| TKC Holdings, Inc. [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	1.70%
PIA High Yield (MACS) Fund \| Rocket Software, Inc. [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	1.60%
PIA High Yield (MACS) Fund \| Consolidated Energy Finance SA [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	1.50%
PIA High Yield (MACS) Fund \| VistaJet Malta Finance PLC / Vista Management Holding, Inc. [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	1.50%
PIA High Yield (MACS) Fund \| Mercer International, Inc. [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	1.50%
PIA High Yield (MACS) Fund \| ITT Holdings LLC [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	1.40%
PIA High Yield (MACS) Fund \| ION Trading Technologies Sarl [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	1.40%
PIA High Yield (MACS) Fund \| Aaa1 [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	3.00%
PIA High Yield (MACS) Fund \| Baa [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	0.00%
PIA High Yield (MACS) Fund \| Ba [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	8.00%
PIA High Yield (MACS) Fund \| B [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	65.00%
PIA High Yield (MACS) Fund \| Caa [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	19.00%
PIA High Yield (MACS) Fund \| Ca [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	1.00%
PIA High Yield (MACS) Fund \| NR [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	4.00%
PIA High Yield (MACS) Fund \| Industrial [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	21.80%
PIA High Yield (MACS) Fund \| Consumer, Non-cyclical [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	20.40%
PIA High Yield (MACS) Fund \| Basic Materials [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	17.60%
PIA High Yield (MACS) Fund \| Energy [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	11.50%
PIA High Yield (MACS) Fund \| Consumer, Cyclical [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	8.70%
PIA High Yield (MACS) Fund \| Technology [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	7.90%
PIA High Yield (MACS) Fund \| Communications [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	6.10%
PIA High Yield (MACS) Fund \| Financial [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	1.30%
PIA High Yield (MACS) Fund \| Cash & Other [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	4.70%

PIA High Yield (MACS) Fund | Fidelity Government Portfolio [Member]