XML 42 R35.htm IDEA: XBRL DOCUMENT v2.4.1.9
Partnership's Repurchase Activities (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 6 Months Ended 36 Months Ended
Dec. 31, 2014
Mar. 31, 2015
Sep. 30, 2014
Capital Unit [Line Items]      
Partnership's common units authorized for repurchase   6,044us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased  
Private Transaction      
Capital Unit [Line Items]      
Partnership's common units authorized for repurchase   1,150us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
/ us-gaap_ShareRepurchaseProgramAxis
= sgu_PrivateTransactionMember		 1,450us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
/ us-gaap_ShareRepurchaseProgramAxis
= sgu_PrivateTransactionMember
Plan III Common Units Repurchase Program      
Capital Unit [Line Items]      
Partnership's common units authorized for repurchase   4,894us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
/ us-gaap_ShareRepurchaseProgramAxis
= sgu_StockRepurchaseProgramThreeMember		  
Total Number of Units Purchased 123us-gaap_StockRepurchasedAndRetiredDuringPeriodShares
/ us-gaap_ShareRepurchaseProgramAxis
= sgu_StockRepurchaseProgramThreeMember		 [1] 123us-gaap_StockRepurchasedAndRetiredDuringPeriodShares
/ us-gaap_ShareRepurchaseProgramAxis
= sgu_StockRepurchaseProgramThreeMember		 [1] 3,619us-gaap_StockRepurchasedAndRetiredDuringPeriodShares
/ us-gaap_ShareRepurchaseProgramAxis
= sgu_StockRepurchaseProgramThreeMember		 [1],[2]
Average Price Paid per Unit $ 5.64sgu_AveragePricePaidPerUnit
/ us-gaap_ShareRepurchaseProgramAxis
= sgu_StockRepurchaseProgramThreeMember		 [3] $ 5.64sgu_AveragePricePaidPerUnit
/ us-gaap_ShareRepurchaseProgramAxis
= sgu_StockRepurchaseProgramThreeMember		 [3] $ 4.69sgu_AveragePricePaidPerUnit
/ us-gaap_ShareRepurchaseProgramAxis
= sgu_StockRepurchaseProgramThreeMember		 [2],[3]
Maximum Number of Units that May Yet Be Purchased 2,302us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased
/ us-gaap_ShareRepurchaseProgramAxis
= sgu_StockRepurchaseProgramThreeMember		 2,302us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased
/ us-gaap_ShareRepurchaseProgramAxis
= sgu_StockRepurchaseProgramThreeMember		 2,425us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased
/ us-gaap_ShareRepurchaseProgramAxis
= sgu_StockRepurchaseProgramThreeMember		 [2]
[1] Units were repurchased as part of a publicly announced program, except as noted in a private transaction.
[2] Includes 1.45 million common units acquired in a private transaction.
[3] Amounts include repurchase costs.