diff --git c/arelle/CntlrProfiler.py i/arelle/CntlrProfiler.py
index a64bb1b..dc0299d 100644
--- c/arelle/CntlrProfiler.py
+++ i/arelle/CntlrProfiler.py
@@ -1,5 +1,6 @@

-import Cntlr, ModelManager, FileSource, time
+from arelle import Cntlr, ModelManager, FileSource
+import time
 from optparse import OptionParser
 import cProfile
 import gettext
diff --git c/arelle/ValidateFilingText.py i/arelle/ValidateFilingText.py
index 12dbbbb..c0e98c3 100644